# -ero
## Basque
### Etymology

Shift from oro (“every, all”).

### Suffix

-ero
* Used to form adverbs from nouns of time; every, each
    ‎gau (“night”) + ‎-ero → ‎gauero (“every night”)

#### Derived terms
### References

* ↑ “oro” in Etymological Dictionary of Basque by R. L. Trask, sussex.ac.uk

## Esperanto
### Etymology

Possibly from French -aire; however, compare Ancient Greek μέρος (méros, “part, component”).

### Pronunciation

* IPA: [ˈero]
* Rhymes: -ero
* Hyphenation: e‧ro

### Suffix

-ero
* Denotes a particle of something.
    ‎greno (“grain”) + ‎-ero → ‎grenero (“seed of grain”)
    ‎sablo (“sand”) + ‎-ero → ‎sablero (“grain of sand”)

#### Derived terms
## Finnish
### Alternative forms

* -ro, -rö

### Etymology

-ra +‎ -i, with i triggering labialization of the preceding vowel and later being lost. The e is re-extracted. Compare synonymous -(e)lo.

### Pronunciation

* IPA: /-ero/, [-e̞ro̞]

### Suffix

-ero (front vowel harmony variant -erö, linguistic notation -erO)
* Forms certain sound-symbolic or diminutive nouns.
    ‎koppi + ‎-ero → ‎koppero
* Forms certain pejorative nouns.
    ‎mulkku + ‎-ero → ‎mulkero
    ‎nynny + ‎-ero → ‎nynnerö

#### Usage notes

A similar element is to be found at the end of multiple words without an obvious root – some of them diminutive or descriptive nouns (napero, tötterö), others pejorative (punkero), and some adjectives (tökerö).

#### Declension

Possessive forms of -ero (Kotus type 2/palvelu, no gradation) :

#### Derived terms

* -llero

## Ido
### Etymology

Borrowed from English -er, French -eur, German -er, Russian -ер (-er).

### Pronunciation

* IPA: /ˈero/

### Suffix

-ero
* suffix denoting a person occupied in a customary though not professional activity or occupation
    ‎boxar (“to box”) + ‎-ero → ‎boxero (“(amateur) boxer”)
* suffix denoting an animal or other thing with a characteristic action
    ‎rodar (“to gnaw”) + ‎-ero → ‎rodero (“rodent”)
    ‎krozar (“to cruise”) + ‎-ero → ‎krozero (“cruiser”)
    (neologism) ‎komputar (“to compute”) + ‎-ero → ‎komputero (“computer”)

#### Derived terms
## Interlingua
### Etymology

Borrowed from English -er, French -ier, Portuguese -eiro/Spanish -ero, all ultimately from Latin -ārius or -ārium.

### Pronunciation

* IPA: /ˈero/

### Suffix

-ero
* forms nouns from nouns, denoting a professional occupation; -er, -eer
    Synonyms: -ario, -ista
    ‎barba (“beard”) + ‎-ero → ‎barbero (“barber”)
    ‎banca (“bank”) + ‎-ero → ‎banchero (“banker”)
    ‎ambulantia (“ambulance”) + ‎-era → ‎ambulantiera (“ambulance driver”)

#### Usage notes

* The suffix -ario also indicates a professional and parallel forms with either suffix are often possible. The somewhat synonymous suffix -ista indicates preoccupation with a system, science, art etc.
* This suffix is male, the coordinate female suffix being -era.
* The corresponding adjectival suffix is often -ari.

#### Derived terms
### References

* Alexander Gode, Hugh E. Blair (1955) Interlingua: A Grammar of the International Language, →ISBN

## Michoacán Nahuatl
### Etymology

Borrowed from Spanish -ero.

### Suffix

-ero
* Suffix that forms nouns and adjectives from nouns.

#### Derived terms

* laxpuyahuero
* masalero
* mañanero
* michero
* neculero
* pelolero
* pinolero
* tempranero
* xiulero

## Spanish
### Etymology

Inherited from Latin -ārius via */arju/ > */ajru/. Compare Portuguese -eiro. Doublet of the borrowed suffix -ario.

### Pronunciation

* IPA: /ˈeɾo/ [ˈe.ɾo]
* Rhymes: -eɾo
* Syllabification: -e‧ro

### Suffix

-ero m (noun-forming suffix, plural -eros, feminine -era, feminine plural -eras)
* forms occupations and other agent nouns from nouns
    ‎vaca (“cow”) + ‎-ero → ‎vaquero (“cowboy”)
    ‎gaita (“bagpipes”) + ‎-ero → ‎gaitero (“bagpiper”)
* forms objects designed for use with another object
    ‎llave (“key”) + ‎-ero → ‎llavero (“key ring”)
    ‎moneda (“coin”) + ‎-ero → ‎monedero (“purse”)
* forms tree names from their fruit
    ‎albaricoque (“apricot”) + ‎-ero → ‎albaricoquero (“apricot tree”)
    ‎coco (“coconut”) + ‎-ero → ‎cocotero (“coconut tree”)
* forms places where collections can be found
    ‎hormiga (“ant”) + ‎-ero → ‎hormiguero (“anthill”)
    ‎estiércol (“manure”) + ‎-ero → ‎estercolero (“dung heap”)
    ‎refrán (“saying, proverb”) + ‎-ero → ‎refranero (“collection of proverbs”)

### Suffix

-ero (adjective-forming suffix, feminine -era, masculine plural -eros, feminine plural -eras)
* forms adjective from nouns denoting the qualities of the noun
    ‎casa (“house”) + ‎-ero → ‎casero (“homely”)
    ‎calle (“street”) + ‎-ero → ‎callejero (“street (relational)”)
    ‎traición (“betrayal”) + ‎-ero → ‎traicionero (“treacherous”)

### Further reading

* “-ero”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014

## Tagalog
### Etymology

Borrowed from Spanish -ero.

### Pronunciation

* (Standard Tagalog) IPA: /ˈeɾo/ [ˈɛː.ɾo]
* Rhymes: -eɾo
* Syllabification: -e‧ro

### Suffix

-ero (noun-forming suffix, feminine -era, Baybayin spelling ᜒᜇᜓ)
* forms occupations and other agent nouns from nouns
    ‎babae (“woman”) + ‎-ero → ‎babaero (“womanizer”)
    ‎gitara (“guitar”) + ‎-ero → ‎gitarero (“guitarist”)
    ‎musika (“music”) + ‎-ero → ‎musikero (“musician”)
    ‎sabong (“cockfight”) + ‎-ero → ‎sabongero (“cockfighter”)
    ‎salamangka (“magic”) + ‎-ero → ‎salamangkero (“magician”)
    ‎tambol (“drum”) + ‎-ero → ‎tambolero (“drummer”)
    ‎tinda (“goods for sale”) + ‎-ero → ‎tindero (“vendor”)
    ‎tubo (“pipe”) + ‎-ero → ‎tubero (“plumber”)

#### Derived terms

* Tagalog terms suffixed with -ero